96 	(((CP)->tx_tail <= (CP)->tx_head) ?			\
97 	  (CP)->tx_tail + (DE_TX_RING_SIZE - 1) - (CP)->tx_head :	\
98 	  (CP)->tx_tail - (CP)->tx_head - 1)
292 	unsigned		tx_head;  member
506 		  de->rx_tail, de->tx_head, de->tx_tail);  in de_interrupt()
541 	unsigned tx_head = de->tx_head;  in de_tx()  local
544 	while (tx_tail != tx_head) {  in de_tx()
622 	entry = de->tx_head;  in de_start_xmit()
644 	de->tx_head = NEXT_TX(entry);  in de_start_xmit()
753 	entry = de->tx_head;  in __de_set_rx_mode()
791 	de->tx_head = NEXT_TX(entry);  in __de_set_rx_mode()
895 	de->tx_head = de->tx_tail = 0;  in de_stop_hw()
1316 	de->tx_head = de->tx_tail = 0;  in de_init_rings()
1453 		   de->rx_tail, de->tx_head, de->tx_tail);  in de_tx_timeout()